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0. P. JACKSON. Tools for Haring Glassware.

Patented Dec.,23, 1879.

' VZZW Wan/[7 Inventor.

Witnesses Attarneys.

OLIVER I. AGKSON, OF PITTSBUR-Gr, PENNSYLVANIA, ASSIGNOR TO WILLIAM I. MILLER, OF SAME PLACE.

IMPROVEMENT IN TOOLS FOR FLARING GLASSWARE.

Specification forming part of Letters Patent No. 222,7Q5, dated December '23, 1879; application filed J unc 18, 1879.

To all whom it may concern:

Be it known that 1, ULIVER P. JACKSON, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Tools for Flax-ing Glassware; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification, in which Figure 1 is a side elevation; Fig. 2, a transverse section on line 00 as, looking to the left. Fig. 3 is a similar view on line y 3 looking to the right.

This invention relates to an improved tool or plug for flaring the mouths of lamp-chimneys, smoke-bells, goblets, 8m; and it consists in a conical or conoidal body having its surface partly removed in such a manner as to leave facets, which overlap each other circumferentially, as hereinafter described.

The invention is especially designed to opcrate by oscillation, after the manner described in Letters Patent No. 214,150, but can also be applied to rotary machines or hand-tools.

A designates the stem, by which the device is attached for operation. B is a conical or conoidal body, having the facets a in relief; or it may be described as a solid cone or conoid having portions of its surface removed in such manner that the surface is not continuous, either circumferentially or longitudinally, thus forming the raised facets a. These I so proportion relatively that the adjacent ends overlap, so that the line of the face of one, in operating, will lead onto that of the next.

Gireumferentially there may be two, three, or more facets alignec; but I find, in practice, that two of moderate width are sufficient.

Obviously, the shape of the facets may be lation these facets present practically a co ntinuous surface to the glass, while the actual surface in contact is not suffi it to cause crizzling or cording, because the surfaceis discontinuous; yet the surface is great enough to prevent too rapid Wear. Such rapid wear necessitates the frequent substitution of a new tool, or else makes a constantly-decreasing size of flare, thus gradually departing from a, given standard.

Besides the top of lam p-chimn eys, my invention is applicable to many other uses in finishing glassware. Hence I do not confine myself to a conical form as a departure from that outline may be desirable.

I am aware that. tools for flaring are not a novelty, as they have been made in various ways, such as a series of converging wires, a solid or a ribbed plug, or a body of suitable shape covered with a spiral rib running from end to end. These have been given rotary motion; and I do not claim herein anything constructed in any of said ways.

My plug is not a continuous surface at any point, either longitudinally or circumferentially. There is no direction of the working-surface either one or the other way. This enables the glassware to ride smoothly on the plug when being flared; for while merely ro tating the glass is not crizzled, and when being flared during oscillation or rotation the surfaces act in the same manner. At the same time the facets enable me to have a comparatively broad surface in contact with the glass at all times without producing harmful friction.

I claim as my invention- 1. A finishing-tool for glassware having its working-face discontinuous in all directions, substantially as described.

2. A finishing-tool for glassware consisting of a body, B, having the raised and overlapping facets a, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand.

OLIVER I. JACKSON.

YVitnesses:

T. J. MeTrenn, JOHN M. PATTERSON. 

